Correlated Ligand Electrons in the Transition-Metal Oxide SrRuO3

被引：0

作者：

Seki, Yuichi ^{[1
]}

Wakabayashi, Yuki K. ^{[2
]}

Takeda, Takahito ^{[1
]}

Inagaki, Kohdai ^{[1
]}

Fujimori, Shin-ichi ^{[3
]}

Takeda, Yukiharu ^{[3
]}

Fujimori, Atsushi ^{[3
,5
,6
,7
]}

Taniyasu, Yoshitaka ^{[2
]}

Yamamoto, Hideki ^{[2
]}

Krockenberger, Yoshiharu ^{[2
]}

Tanaka, Masaaki ^{[1
,4
,8
]}

Kobayashi, Masaki ^{[1
,4
]}

机构：

[1] Univ Tokyo, Dept Elect Engn & Informat Syst, Bunkyo, Tokyo 1138656, Japan

[2] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[3] Japan Atom Energy Agcy, Mat Sci Res Ctr, Sayo, Hyogo 6795148, Japan

[4] Univ Tokyo, Ctr Spintron Res Network, 7-3-1 Hongo,Bunkyo Ku, Tokyo 1138656, Japan

[5] Natl Tsing Hua Univ, Ctr Quantum Technol, Hsinchu 30013, Taiwan

[6] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan

[7] Univ Tokyo, Dept Phys, Tokyo 1330033, Japan

[8] Univ Tokyo, Inst Nano Quantum Informat Elect, 4-6-1 Komaba,Meguro Ku, Tokyo 1538505, Japan

来源：

PHYSICAL REVIEW LETTERS | 2025年 / 135卷 / 04期

关键词：

WEYL FERMIONS; RESONANT-PHOTOEMISSION; SUPERCONDUCTIVITY; PHASE;

D O I：

10.1103/n9qh-6739

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In transition-metal compounds, the transition-metal d electrons play an important role in their physical properties; however, the effects of the electron correlation between the ligand p electrons have not been clear yet. In this Letter, the Ru 4d and O 2p partial density of states (PDOS) in transition-metal oxide SrRuO3 involving Weyl fermions are investigated by resonant photoemission spectroscopy. The observations demonstrate that the O 2p PDOS is distorted from that predicted by first-principles calculations than the Ru 4d PDOS. The results indicate that the electron correlation in the ligand orbitals will be important to understand the electronic structure of the p-d hybridized state in strongly correlated electron systems, even with topological states.

引用

页数：7

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